End hook



sept. 9, 1930. `w. J. ROY 1,775,174

END HOOK Filed May 25, 1929 IN V EN TOR.

A TTORNEYS.

Patented Sept. 9, 1930 UNITED STATES PATEN'll OFFICE WILFRID J'. ROY, OF NEWARK, NEW JERSEY, ASSIGNOR TO GEMEX COMIANY, 0F NEW- ARK, NEW JERSEY, A CORPORATION 0F NEW JERSEY END HOOK Application filed May 23,

This invention relates to an end hook for securing a watch strap to the bail or lug o f a wrist watch; and has for its object to provide a releasable connection by which the strap may be secured to the end hoolr` and held secured thereto.

A further object of the invention is to secure the clamping member of the end hook in strap securing position against accidental detachment.

A still further object of the invention is the provision of detent-s on resilient side walls of the body portion of the end hook to snap over the edges of an L-shaped clamping member and prevent the same from accidentally moving from secured position, in order that the strap member' may be securely held 1n engagement with the end hook.

With these and other objects in view, the invention consists of certain novel features of construction, as will be more fully described, and particularly pointed out in the appended claim.

In the accompanyingdra-wings:

Figure 1 is a perspective view of the end hook looking at the top thereof.

Figure 2 is a perspective view of the end Y hook looking at the under side thereof.

. Figure 3 is a section on line 3-3 of Figure l.

Figure 4 is a section on line of Figure 3, illustrating the detents as being formed from the side walls and extending over the edges of the clamping member.

Figure 5 is a sectional View `showing the clamping member in release position.

ln the use of watch strap end hooks for securing a strap to a watch, it is desirable to provide some means by which the strap may be so attached to the end hook that it may be disconnected therefrom and shortened by severing an end portion and then replaced in the end hook; and in order to accomplish this result have provided a cam acting L-shaped lever clamping member pivoted between the resilient side walls in the body of the hook whereby when swung about its pivotfrom a released position to a gripping position the strap may be secured between the edge of the clamping member and the body of the hook 1929. Serial llo. 365,370.

to hold the saine securely in position; and in orderv that the clamp member may not be released accidentally, I have provided detents extending inwardly from each of the resilient side walls to snap over the edges of the clamp and prevent the same from being moved to released position except by the application of a greater amount of force than would be present during working operation of the device to move the clamp about its pivoting trunnions; and the following is a detailed description of the present embodiment of this invention illustrating the preferred means by which these advantageous results may be accomplished:

W'ith reference to the drawings, 10 designates the body of the end hook, the top being illustrated in Figure 1 from which a shank 1l extends which is bent into a U or hook form 12 and adapted to be attached to a wrist watch bail or between a pair of lugs as the case may be. It is, of course, understood that the U or hook portion 12 if closed to a greater extent than that illustrated in Figure 1, will be in the forni of an eye to receive the pin tliruit as is common on wrist watches in use at the present time and the width of the hook portion 12 may be varied to lit different widths of lugs extending from wrist watches for attachment purposes.

The body portion is also formed with resilient side walls 13 and 14 bent from the sheet metal top portion 15 as will be clearly apparent from Figure 2, suitable bearings are formed by openings 16 in each of the side l walls to'pivotally support an L-shaped clamping member 17 by means of its trunnions 18 extendingv from each side thereof into the bearing openings 16 in the side walls by which the clamping member may swing to cause its .portion 19 on one side of its pivoting trunnions 18 to be parallel with the top wall 15 when desired as illustrated on Figure 5 to provide an entering opening for the strap, after which it may be swung to its clamping position, as illustrated in Fioure 3, so that the strap 2O will be positioned between the serrated edge 21v of the portion 19 and the top 15 of the body of the hook to secure it thereto,

Inmoving the clamping member to securing position, thelever portion 22 of the clamping memberV snaps over the detents 23 which extendV inwardly toward each other from the resilient side walls 13 and 14, it being understood that there is suiiicient resiliency of these sidewalls to permit them to spread as the clamping lever'engages the rounded surface of the detents 23 and is manually forced 'there-Y gripping position against the action of said detents upon detaching v movement ofk the strap when the lever is in gripping position.

In testimony whereof I affix my signature. WILFRID J. ROY.

by in being moved to the clamping position n illustrated in Figure 3. A notch 24 iswprovided in the edge of the lever portion of the clamping member to assist in lifting it from clamping position when desired.

By the construction here illustratedancl de scribed it will be apparent that the clamping member may be swung to such position as to allow unobstructed entry of the strap into the body of the hook or a withdrawal of the strap' from such position when desired to be severed i' for adjustment of theencircling length about theV wristl 'and then replaced between the clamping member and the body portion of e the hook for securing the same in position.

` The clamping member has teeth on its gripping portion 19 to bite into the strap and its lhandle portion 22 extends at right anglesto this gripping portion as shown in Fig. 3.

When in -gripping position the end of thehandle Yportion 22 lies in contact with the body and at an angle thereto, in order to be below the detents 23 and as the teeth areimbedded in the strap any movement of the strap will cause the gripping portion 19 to further grip 'the strap by the teeth'moving thereinto and such action of the lever will the pressure of the detents 23. f

The foregoing description is directed solely towards the construction illustrated, but I i desire it to be vunderstood that I Vreserve the also be against d y privilege of resorting to all the mechanical lengthandV provided atthe junction of said portions with lateral extensions pivotally vmounted in said aligned openings, and adapt- 'i i l ed to secure a strap to the hook when -in-grip- I ping position, and inwardly projecting detents on said side walls beneath whichthe Y s handle portion of said lever may be forced whenmoved at an angle to saidbody to .re-

leasably retain said lever in gripping position,

the entire spacebetween said walls below said detents being unobstructed to lpern'uit the lever" to engage the shank, said gripping portion having teeth to extend into the strap,whereby Y said lever is moved about its pivotintoiirmer' 

